Fix accordionTab tag namespace issue

Author: sudheerj

src/components/accordion/accordiontab.vue

@@ -38,7 +38,7 @@
 <script>
  let idx = 0;
  export default {
- name: 'p-accordionTab',
+ name: 'vf-accordionTab',
  data: function () {
  return {
  animating: false,